301 Stainless Steel 

 1 Type 2 stainless steel effect 3 Typical uses 4, 5 surface state, future prospects 
 Chemical composition 
 301 stainless steel 301 stainless steel with chemical composition [1] Grade 1Cr17Ni7. Composition% C: ≤ 0.15, Si: ≤ 1.0, Mn: ≤ 2.0, Cr: 16.0 ~ 18.0, Ni :6.0-8 .0, S: ≤ 0.03, P: ≤ 0.045 
 301 Stainless Steel Performance 
 301 stainless steel yield strength (N/mm2) ≥ 205 ≥ 520 Tensile elongation (%) ≥ 40 hardness HB ≤ 187 HRB ≤ 90 HV ≤ 200 density of 7.93 g · cm-3 specific heat c (20 ℃) ??0.502 J · (g · C) -1 Thermal conductivity λ / W (m · ℃) -1 (in the following temperature / ℃) 
 20 100 500 12.1 16.3 21.4 linear expansion coefficient α / (10-6 / ℃) (in the following temperature between / ℃) 20 ~ 100 20 ~ 200 20 ~ 300 20 ~ 400 16.0 16.8 17.5 18.1 resistivity 0.73 Ω · mm2 · m -1 Melting Point 1398 ~ 1420 ℃ ● Mechanical Properties: Tensile σb (MPa): ≥ 520 conditions yield strength σ0.2 (MPa): ≥ 205 Elongation δ5 (%): ≥ 40 Reduction of area ψ (%) : ≥ 60 Hardness: ≤ 187HB; ≤ 90HRB; ≤ 200HV ● Heat treatment and microstructure specifications: Heat treatment specifications: fast solution 1010 ~ 1150 ℃ cold. Microstructure: Organizing for the austenitic type. In the air or chemical corrosion resistance to corrosive media can be a high-alloy steel, stainless steel is a beautiful surface and good corrosion resistance, without going through the plated surface treatment, and the play inherent in the surface properties of stainless steel, used in many areas of steel, often referred to as stainless steel. Representative of the performance of 13 ,18-8 chrome steel high alloy chrome-nickel steel. From the metallographic point of view, because the stainless steel contains chromium leaving the thin chromium film formed on the surface, the inner membrane to isolate and steel from corrosion-resistant invasive oxygen role. In order to maintain the inherent corrosion resistance of stainless steel, steel must contain more than 12% of chromium. 304 is a versatile stainless steel, it is widely used to produce good overall performance requirements (corrosion resistance and formability) of equipment and parts. 304 stainless steel is produced according to U.S. ASTM standards of a stainless steel grades. 304 is equivalent to our 0Cr19Ni9 (0Cr18Ni9) stainless steel. 304 17% chromium, nickel 7%. 301 is the most widely used stainless steel, heat-resistant steel. Used in food production equipment, chemical equipment through the past, nuclear energy, 304 stainless steel chemical composition specifications C Si Mn PS Cr Ni (Nickel) MoSUS431 ≤ 0.08 ≤ 1.00 ≤ 2.00 ≤ 0.05 ≤ 0.03 18.00-20.00 8.25 ~ 10.50 -304 is 1Cr17Ni7. 301 (17Cr-7Ni-carbon) material: steel, compared with 304, Cr, Ni content of less cold when the tensile strength and hardness increased, non-magnetic, but the magnetic after cold working. Uses: trains, aircraft, conveyors, vehicles, bolts, springs, screen. Note: L on behalf of low-carbon, such as 304L low carbon content than 304. H and S stands for high-temperature, high temperature, such as 310S than 310 strong, 304H than 304 heat